/**
 * Software License, Version 1.0
 * 
 * Copyright 2003 The Trustees of Indiana University.  All rights reserved.
 * 
 *
 *Redistribution and use in source and binary forms, with or without 
 *modification, are permitted provided that the following conditions are met:
 *
 *1) All redistributions of source code must retain the above copyright notice,
 * the list of authors in the original source code, this list of conditions and
 * the disclaimer listed in this license;
 *2) All redistributions in binary form must reproduce the above copyright 
 * notice, this list of conditions and the disclaimer listed in this license in
 * the documentation and/or other materials provided with the distribution;
 *3) Any documentation included with all redistributions must include the 
 * following acknowledgement:
 *
 *"This product includes software developed by the Community Grids Lab. For 
 * further information contact the Community Grids Lab at 
 * http://communitygrids.iu.edu/."
 *
 * Alternatively, this acknowledgement may appear in the software itself, and 
 * wherever such third-party acknowledgments normally appear.
 * 
 *4) The name Indiana University or Community Grids Lab or NaradaBrokering, 
 * shall not be used to endorse or promote products derived from this software 
 * without prior written permission from Indiana University.  For written 
 * permission, please contact the Advanced Research and Technology Institute 
 * ("ARTI") at 351 West 10th Street, Indianapolis, Indiana 46202.
 *5) Products derived from this software may not be called NaradaBrokering, 
 * nor may Indiana University or Community Grids Lab or NaradaBrokering appear
 * in their name, without prior written permission of ARTI.
 * 
 *
 * Indiana University provides no reassurances that the source code provided 
 * does not infringe the patent or any other intellectual property rights of 
 * any other entity.  Indiana University disclaims any liability to any 
 * recipient for claims brought by any other entity based on infringement of 
 * intellectual property rights or otherwise.  
 *
 *LICENSEE UNDERSTANDS THAT SOFTWARE IS PROVIDED "AS IS" FOR WHICH NO 
 *WARRANTIES AS TO CAPABILITIES OR ACCURACY ARE MADE. INDIANA UNIVERSITY GIVES
 *NO WARRANTIES AND MAKES NO REPRESENTATION THAT SOFTWARE IS FREE OF 
 *INFRINGEMENT OF THIRD PARTY PATENT, COPYRIGHT, OR OTHER PROPRIETARY RIGHTS. 
 *INDIANA UNIVERSITY MAKES NO WARRANTIES THAT SOFTWARE IS FREE FROM "BUGS", 
 *"VIRUSES", "TROJAN HORSES", "TRAP DOORS", "WORMS", OR OTHER HARMFUL CODE.  
 *LICENSEE ASSUMES THE ENTIRE RISK AS TO THE PERFORMANCE OF SOFTWARE AND/OR 
 *ASSOCIATED MATERIALS, AND TO THE PERFORMANCE AND VALIDITY OF INFORMATION 
 *GENERATED USING SOFTWARE.
 */
package cgl.narada.jms;

import javax.jms.JMSException;
import javax.jms.Message;

import org.exolab.jms.selector.Selector;

/**
   This class provides the JMS selection mechanism, by interfacing to the
   selction mechanism implement in openJMS from ExoLab Inc.

   @author Shrideep Pallickara
   $Revision$
   $Date$
*/

public class JmsSelector implements JmsDebugFlags {
  private Selector selector;
  private String moduleName = "JmsSelector: ";
  public JmsSelector(String expression) throws JMSException {
    selector = new Selector(expression);
  }

  public boolean eventMatches(Message message) throws JMSException { 
    boolean matchFound = selector.selects(message);
    /**if (matchFound)
       System.out.println("JMS message match found ...");
       else 
       System.out.println("No match for the JMS message found");*/
    return matchFound;
  }
  
  public void fetchSelectorNuggets(String selector) {
      
  }
  
  public static void main(String[] args) {
    String s1 = " (GXO_STREAM_ID <> '3394596805973362057') ";
    //String s1 = " GXO_Destination LIKE '%!%'";
    String s2 = "AND (  ( (GXO_Destination LIKE '%!%' AND GXO_Destination NOT LIKE ";
    String s3 = " '%NCommunityGrids/-5917322239610870334/100948463332810/server:%')";
    String s4 = "OR GXO_Destination LIKE '%YCommunityGrids/-5917322239610870334/100948463332810/server:%')   )";
    //String _selector = s1 + s2 + s3 + s4;
    String _selector = s1;
    System.out.println("The Selector is " + "\n" + _selector );
    
    
    
    try {
      JmsMessage jmsMsg = new JmsMessage();
      long createtime = new Long("1009489961632").longValue();
      long streamId =  new Long("339459680597336205").longValue();
      jmsMsg.setStringProperty("createtime", "'" + createtime + "'");
      jmsMsg.setStringProperty("command", "detect");
      jmsMsg.setStringProperty("GXO_Destination", "!");
      jmsMsg.setStringProperty("GXO_STREAM_ID", "339459680597336205");
      //jmsMsg.setStringProperty("GXO_STREAM_ID", "" + ""+streamId );
      
      System.out.println("\n" + " Matching selector with event " + 
			 jmsMsg + "\n");
      JmsSelector selector = new JmsSelector(_selector);
      selector.eventMatches(jmsMsg);
      
    } catch(JMSException jmsEx) {
      System.out.println(jmsEx);
    }
  }


}
